TY - JOUR T1 - A Finite Volume Scheme for Three-Dimensional Diffusion Equations JO - Communications in Computational Physics VL - 3 SP - 650 EP - 672 PY - 2018 DA - 2018/04 SN - 18 DO - http://doi.org/10.4208/cicp.140813.230215a UR - https://global-sci.org/intro/article_detail/cicp/11044.html KW - AB -

The extension of diamond scheme for diffusion equation to three dimensions is presented. The discrete normal flux is constructed by a linear combination of the directional flux along the line connecting cell-centers and the tangent flux along the cell-faces. In addition, it treats material discontinuities by a new iterative method. The stability and first-order convergence of the method are proved on distorted meshes. The numerical results illustrate that the method appears to be approximate second-order accuracy for solution.